The fact that someone on the Internet exists, who can say he actually doesn't hate any OS solely for the sake of it, and uses the three of them without any problem, almost seems like an anomaly. Congrats for having a brain, you earned a cookie
@Xdqwerty, Osu! Tatakae! Ouendan! is the Japanese version of the game, different settings/characters/songs but otherwise identical mechanics. I played that before I knew about Elite Beat Agents lol. Both fantastic games https://en.wikipedia.org/wiki/Osu!_Tatakae!_Ouendan